Code Geass: Hangyaku no Lelouch - Kiseki no Birthday

Ashford Academy is preparing for a lively school festival when armed remnants of the Neo-Chinese Federation storm the campus and take the students hostage. The attackers believe they have trapped an ordinary group of teenagers, unaware that Lelouch Lamperouge and Suzaku Kururugi are among their captives.

With Geass, military skill, and the student council's chaotic teamwork all hidden behind familiar school faces, Lelouch must find a way to turn the situation around and protect Ashford one more time.